Sharp JW-20RS Uživatelský manuál stáhnout pdf (Strana 111)

9·13

(2) Communication delay time

The communication data on the satellite net may have the delay shown below.

① Delay of input module

② Time required for PC to detect input state (one operation cycle max.)

③ Operation time of sending PC (one operation cycle)

④ Time to complete sending of operation result (one communication cycle max.)

⑤ Time required for receiving PC to write receive data in PC data memory

(one operation cycle max.)

⑥ Operation time of receiving PC (one operation cycle)

⑦ Delay of output module

Communication delay time is the total time of ① to ⑦ above.

The buffer memory contents of the JW-20CM is renewed for each PC operation cycle.

Therefore, a contact point which turns “ON” for only one operation cycle of a PC may not be

transferred.

①

②

③

④

⑤

⑥

⑦

PC00 PC01

O N

I / O

PC00

JW-20CM

P C 0 1

I / O

Operation cycle

(Communication)

Remarks

1 2 ... 106 107 108 109 110 111 112 113 114 115 116 ... 229 230

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Sharp JW-20RS Uživatelský manuál Strana 111